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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <sal/config.h>
#include <drawinglayer/primitive2d/BufferedDecompositionPrimitive2D.hxx>
#include <drawinglayer/geometry/viewinformation2d.hxx>
#include <drawinglayer/primitive2d/BufferedDecompositionFlusher.hxx>
namespace drawinglayer::primitive2d
{
bool BufferedDecompositionPrimitive2D::hasBuffered2DDecomposition() const
{
if (!mbFlushOnTimer)
return maBuffered2DDecomposition.is();
else
{
std::lock_guard Guard(maCallbackLock);
return maBuffered2DDecomposition.is();
}
}
void BufferedDecompositionPrimitive2D::setBuffered2DDecomposition(Primitive2DReference rNew)
{
if (!mbFlushOnTimer)
{
// no flush used, just set
maBuffered2DDecomposition = std::move(rNew);
}
else
{
// decomposition changed, touch
maLastAccess = std::chrono::steady_clock::now();
BufferedDecompositionFlusher::update(this);
// tdf#158913 need to secure change when flush/multithreading is in use
std::lock_guard Guard(maCallbackLock);
maBuffered2DDecomposition = std::move(rNew);
}
}
BufferedDecompositionPrimitive2D::BufferedDecompositionPrimitive2D()
: maBuffered2DDecomposition()
, maCallbackLock()
, mbFlushOnTimer(false)
{
}
BufferedDecompositionPrimitive2D::~BufferedDecompositionPrimitive2D() {}
void BufferedDecompositionPrimitive2D::get2DDecomposition(
Primitive2DDecompositionVisitor& rVisitor,
const geometry::ViewInformation2D& rViewInformation) const
{
if (!mbFlushOnTimer)
{
// no flush/multithreading is in use, just call
if (!maBuffered2DDecomposition)
maBuffered2DDecomposition = create2DDecomposition(rViewInformation);
rVisitor.visit(maBuffered2DDecomposition);
}
else
{
// tdf#158913 need to secure 'visit' when flush/multithreading is in use,
// so that the local non-ref-Counted instance of the decomposition gets not
// manipulated (e.g. deleted)
Primitive2DReference xTmp;
{
// only hold the lock for long enough to get a valid reference
std::lock_guard Guard(maCallbackLock);
maLastAccess = std::chrono::steady_clock::now();
if (!maBuffered2DDecomposition)
{
maBuffered2DDecomposition = create2DDecomposition(rViewInformation);
BufferedDecompositionFlusher::update(this);
}
xTmp = maBuffered2DDecomposition;
}
rVisitor.visit(xTmp);
}
}
} // end of namespace drawinglayer::primitive2d
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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